-vac aaaa aaac aaap aaas aaav aaca aacc aacp aacs aacv aapa aapc aaps aasa aasc aass aava acaa acac acap acas acca accc accp accs acpa acps acsa acsc acss acvs acvv apac apap apas apca apcc apcs appa appc apps apsa apss apsv asaa asac asap asas asc- asca ascc ascp aspa aspc asps assa assc assp asss asva asvs avas avcc avva caaa caac caap caas cac- caca cacc capa capc capp caps casa casc casp cass cava cavs ccaa ccac ccap ccas ccca cccc cccp cccs cccv ccpa ccpp ccps ccsa ccsp ccss ccvs cpaa cpac cpap cpas cpca cpcs cppa cpps cpsa cpsc cpvc csaa csac csas csav cscc cscs cspa cspc csps cssa cvac cvas cvca cvcc cvss paap paas paca pacs papa papp paps pasa pasc pasp pass pava pavs pcaa pcap pcas pcca pccc pccs pcpp pcps pcsa ppac ppap ppcc ppcs pppa pppp ppps ppss psac psap psas psav psca pspp psps pssa pssc pvcs pvpa pvsa sa-c saac saap saas saca sacc sacs sapa sapp saps sasa sasc sass sava savs scaa scac scap scas sccc sccp sccs scpa scps scsa scsc scvp sp-a spac spap spas spca spcc spcs spps spsa spsp spss spva ssaa ssac ssap ssas ssca sscc sscp sscs sspa sspc ssps sssa sssc ssss ssvp svcc svcs svsc vaas vaca vacs vapa vas- vasa vasp vass vava vavs vssc vvvv